1. Status Report on the Alignment Activities at SLAC
Catherine Le Cocq, Brian Fuss, Robert Ruland
Stanford Linear Accelerator Center,
Stanford, CA, USA
The Stanford Linear Accelerator Center is operated by Stanford University for the U.S. Department of Energy.

2. Metrology Department Goals
Support SLAC physics experiments.
Guide all surveying and mapping efforts at SLAC.
Promote accelerator alignment technologies inside and outside the laboratory.
Catherine Le Cocq

3. Current Experiments Future Developments
PEP II
E158
SPEAR 2
Future Developments
SPEAR 3
LCLS
GLAST
NLC

4. SLAC/SSRL Site SPEAR LCLS PEP II e- injector ESA FFTB
NLCTA
BSY
ESB
Not to scale!
Catherine Le Cocq

5. PEP II & BABAR 2000 2002 Stations 604 359 Points 3636 3507
Tracker Triplets
13699
10446
Height Differences
1109
1311
Unknowns
15140
12679
2000
2002
D m 30 50
h m / D 40
v m / D
100
h m
Catherine Le Cocq

6. SPEAR: Mapping-Fiducialization-Assembly
Catherine Le Cocq

7. Future 11-12-02 Catherine Le Cocq Clean Room Tower Grid Far hall
Undulator
Far hall
Near hall
Clean Room
Tower
Grid
Catherine Le Cocq

8. Instrumentation Studies
Classical Surveying Instruments
Trackers / Total Stations
Leveling
Gyrotheodolites
Others Devices:
Offset
Tilt
Straightness…
Catherine Le Cocq

9. Model / Software Developments
Network Analysis: LEGO
Approximate Coordinates Determination
New Type of Observation
Error Checking
Visualization Tool: SIMS
Software Packaging: WinGEONET
Others: Refraction Studies
Catherine Le Cocq

10. Mapping Effort X_global Z_SLAC Y_global X_SLAC Z_global ITRF2000
GPS: 3 Leica SR-530 receivers
X_global
Z_SLAC
Y_global
X_SLAC
Z_global
ITRF2000
NAD83
SLAC
* Epoch of ITRF2000 and NAD83:
GIS: MicroStation v8 with GeoGraphics
Catherine Le Cocq

11. Conclusion
Catherine Le Cocq